Molding-machine.



H. TSCHERNING.

MOLDING MACHINE.

APPLICATION FILED SEPT.3, 191s.

Patented May 2,1916.

4 SHEETS-SHEET 1.

H. TSCHERNING.

MOLDING MACHINE. APPLICATION HLED SEPT. 3. 1915.

Patented May 2,1916.

4 SHEETS-SHEET 2- 'mB COLUMBIA PLANOQRAPH cm, WASHINGTON, D, r

H. TSCHERNING. MOLDING MACHINE. APPLICATION FILED SEPT. 3. m5.

Patented May 2,1916.

4 SHEETS-SHEET 3- TATES TE FFT@.

HENRY TSGHERNING, OF FREEPORT, ILLINOIS, ASSIGNOB. T ARCADE MANUFAC- TURING COMPANY, OF FREEPORT, ILLINOIS, A CORPORATION OF ILLINOIS.

MOLDING-MACHINE.

Application filed September 3, 1915.

1 0 all whom it may concern:

Be it known that I, HENRY TSOHERNING, a citizen of the United States, and a resident of Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Molding-Hachines, of which the following is a specification.

The nature of my invention will appear from the following description of one of the forms in which it may be embodied which has been selected by me for purposes of illustration, and the essential characteristics of said invention will be pointed out in the claims at the end of this specification. This preferred form is shown in the drawings in which Figure is a side elevation of the same; Fig. 2 is a plan; Fig. 3 is a broken middle longitudinal vertical section; Fig. a shows details in a vertical transverse section in plane ll of Fig. 1 looking in the direction of the arrow l; and Fig. 5 shows parts in a vertical transverse section in plane 5-5 of Fig. 1 looking in the direction of the arrow 0.

A is a supporting bed. At the left in Fig. 1 is a vibrating table, B, carried by an air cylinder, I), supplied with compressed air through a pipe, 6 and operating in the manner well known in the art. Upon opposite sides of the transverse middle portion of the bed are two upright standards, C, 0 (Fig. 4:) supporting two guide rods, D, D and vertical racks E, E

A vertically sliding frame, F, is guided on the rods and in it is mounted a shaft, G, carrying at its opposite ends pinions, H, H, in mesh respectively with the racks E, E The middle portion of the shaft carries a swinging frame K.

A piston rod, m, connects the frame, F, with a piston, M, in an air cylinder, N, supplied with compressed air through pipes, n, a (Fig. 3). The air pressure upon the piston moves the frame F up and down running the pinions H, H along the racks E, E thereby rotating the shaft G and swinging the frame between the positions shown in full lines and in dotted lines in Fig. 1.

A swinging table, P, (Fig. 1) is positioned upon the swinging frame K by means of four bolts, p, 39 39 p passing through holes in the frame. The two bolts on each side of the frame are connected by a spring Specification of Letters Yatent.

Patented May 2, 1916.

Serial No. 48,767.

frame. A second crank, 39 a link p and a lever, 29", afford means for conveniently operatlng the crank arm 39. Beneath each bearing, is, is a post, S, to support the frame K in the position seen in Fig. 1.

At the right hand end of the bed A (Figs.

1, 2, 3), is a flask receiving device, T, having four supporting arms, 6, t, upturned at their free ends, (see Fig. 1), and pivoted at their other ends upon studs, 27*, (see Fig. 5), carrying clamp levers, F, by means of which the arms may be clamped agamst rocking on the studs. One of these clamp levers is shown in side elevation in Fig. 1, and the section seen in Fig. 5 shows how one end of each lever is threaded upon its corresponding stud so that angular movement of the lever upon the stud may tighten it upon the other parts thereon and clamp them tightly together and also tightly against the head U in which the studs are secured.

Each supporting arm has a lug, i depending near its pivoted end and compres slon sprmgs, f, are interposed under tension between the lugs of the members of each pair of arms to urge the lugs apart and the free ends of the arms upward. This is best seen in Fig. l, where the spring 23 is seen be tween two of the lugs t, the lug at the left being a part of the supporting arm 6, and the lug at the right being a part of the supporting arm 15. Both arms are pivoted upon the stud 27*, so that the opening of the spring separates the lugs and raises the free ends of the arms.

The studs 15* are secured in a head, U, upon the top of a hollow plunger, u, vertically guided in a vertically movable cylinder, V. A set screw, o, provided with a handle, of, is used to clamp the plunger against movement in the cylinder V and a pipe, 0 supplies compressed air to raise the plunger in said cylinder.

Upon the bottom of the cylinder, V, is a piston, W, moving up and down in an outer ment in this direction.

cylinder, X, supplied with compressed air through the pipes, a an.

In operation the swinging frame is first put in the position shown in Fig. 1, the swinging table P resting on the vibrator B and being loosely connected to the swinging frame K by the spring bars, 1), which it will be noticed are here under little tension. A

. flask and pattern are placed upon the table P and the sand is rammed or shaken home by the vibrator, or both, after which a bottom board is clamped upon the flask and the table P and swinging frame K brought tightly together by means of the levers p. Compressed air'is then turned into the bottom of the cylinder N, raising the piston therein and swinging the frame K'into the position shown in dotted lines in Fig. 1. Adjustable stops, Y, are shown resting on the tops of the standards, C, (1 to limit the move- Air is now turned into the hollow plunger, it, through the pipe, 11 bringing the supporting arms, t, t t 6 up against the bottom board of the flask, the arms accommodating themselves to the latter, after which they are clamped against rocking upon their pivots by means of the clamp arms, 6*". The hollow plunger is now clamped to the cylinder V bymeans of the screw 1;, and the table P released from the bottom board, allowing the flask to rest upon the supporting arms. The latter are now lowered by admitting air through the pipe, :10, and allowing it to escape through the pipe as, drawing the pattern which is fast upon the table P. After the flask has been removed the swinging table is returned to its first position and is ready for another flask. If the new flask is like the first, the raising of the piston, V, in the cylinder X will bring the supporting arms into position to receive it without any adjustment of the hollow plunger in the cylinder V.

The air valves and cocks are seen in Fig. 1 but it is thought best not to describe them because the mere charging and exhausting of air cylinders is so common as to be well known to any one having the slightest [knowledge of the art.

Certain features shown, but not claimed herein form the subject matter of my copending application, Serial Number 70,476, filed January 5, 191

The details of the construction may be varied without materially affecting my invention, hence I do not limit myself thereto eX- cept by the following claims and those contained in my divisional application herein before referred to, in which I intend to cover all patentable novelty contained in said invention in view of the prior art.

I claim as new and desire to secure by Letters Patent 5' 1. A molding machine having a suitable bed frame, a vibrating table supported thereon, a swinging table, a swinging frame having a transverse yielding spring connection with the swinging table and moving into a position-where the swinging table rests on the vibrating table and is vibrated thereby against the tension of said spring connection, and means for increasing the tension of the spring connection to secure the frame and swinging table tightly together.

2. A molding machine having a bed frame, a vibrating table supported thereon, a swinging frame, a swinging table resting upon the vibrating table in one of the positions of the swinging frame, bolts arranged in pairs secured .to the swinging table and guided in the swinging frame, spring bars each secured at its opposite ends respectively to the members of a pair of said bolts, crank arms suitably supported and pivoted at one end and swinging between the spring bars and the swinging frame to bend the middle portions of the bars away-from the swinging table, and suitable means for rocking said crank arms.

A rock over molding machine having a bed frame, standards thereon, a vertically reciprocating frame guided on said stand-- ards, an air cylinder, a piston therein connected to the guided frame to reciprocate the same, a shaft mounted in the guided frame, a swinging flask carrying frame fast at one end upon said shaft, a rack upon the standards and a pinion in mesh therewith and fast upon the shaft.

In witness whereof I have signed the above application for Letters Patent at Freeport, Illnois, this 16th day of August, A. D. 1915.

HENRY TSGHERNING.

Witnesses L. L. MUNN, Rnnrn BURTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0; 

